GMC Sierra Owners Manual

Clock
Instruments and Controls / Controls / Clock

AM-FM Radio and AM-FM Radio with CD Player

To set the clock:

1. Turn the ignition key to ACC/ ACCESSORY or ON/RUN, then press the GMS Sierra: Clock. 2. Press the button until the hour numbers begin to flash, then turn the knob to increase or decrease the hour. button to turn the radio on.

2. Press the GMS Sierra: Clock. 3. Press the button until the minute numbers begin to flash, then turn the knob to increase or decrease the minutes. button until the hour numbers begin to flash, then turn the GMS Sierra: Clock. 3. Press the button until the minute numbers begin to flash, then turn the knob to increase or decrease the minutes. knob to increase or decrease the hour.

3. Press the GMS Sierra: Clock. 4. Press the button until the 12HR or 24HR time format begins to flash, then turn the knob to change the time format. button until the minute numbers begin to flash, then turn the GMS Sierra: Clock. 4. Press the button until the 12HR or 24HR time format begins to flash, then turn the knob to change the time format. knob to increase or decrease the minutes.

4. Press the GMS Sierra: Clock. 5. Press the button again until the clock display stops flashing to set the currently displayed time, or wait until the flashing stops after five seconds and the current time displayed automatically sets. button until the 12HR or 24HR time format begins to flash, then turn the GMS Sierra: Clock. 5. Press the button again until the clock display stops flashing to set the currently displayed time, or wait until the flashing stops after five seconds and the current time displayed automatically sets. knob to change the time format.

5. Press the GMS Sierra: Clock. MP3 Radios with a Single CD or a Single CD and DVD button again until the clock display stops flashing to set the currently displayed time, or wait until the flashing stops after five seconds and the current time displayed automatically sets.

MP3 Radios with a Single CD or a Single CD and DVD Player

To adjust the time and date:

1. Turn the ignition key to ACC/ ACCESSORY or ON/RUN, then press the GMS Sierra: Clock. 2. Press the button to display HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year). button to turn the radio on.

2. Press the GMS Sierra: Clock. 3. Press the softkey located under any one of the tabs to change that setting. button to display HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year).

3. Press the softkey located under any one of the tabs to change that setting.

4. To increase the time or date, do one of the following:

• Press the softkey below the selected tab.

• Press the GMS Sierra: Clock. • Press the SEEK button.

• Press the GMS Sierra: Clock. FWD button. FWD button.

• Turn the GMS Sierra: Clock. 5. To decrease the time or date, do one of the following: knob clockwise.

5. To decrease the time or date, do one of the following:

• Press the GMS Sierra: Clock. • Press the SEEK button.

• Press the GMS Sierra: Clock. REV button. REV button.

• Turn the GMS Sierra: Clock. To change the time default setting from 12 hour to 24 hour or to change the date default setting from month/ day/year to day/month/year: knob counterclockwise.

To change the time default setting from 12 hour to 24 hour or to change the date default setting from month/ day/year to day/month/year:

1. Press the GMS Sierra: Clock. 2. Press the softkey located below the desired option. button and then the softkey located below the forward arrow tab. 12H, 24H, the date MM/DD (month and day), and DD/MM (day and month) displays.

2. Press the softkey located below the desired option.

3. Press the GMS Sierra: Clock. MP3 Radio with a Six-Disc CD Player button again to apply the desired option, or let the screen time out.

MP3 Radio with a Six-Disc CD Player

To set the time and date:

1. Turn the ignition key to ACC/ ACCESSORY or ON/RUN, then press the GMS Sierra: Clock. 2. Press the MENU button and then the softkey under the tab to display HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year). button to turn the radio on.

2. Press the MENU button and then the softkey under the GMS Sierra: Clock. 3. Press the softkey located under any one of the tabs to change that setting. tab to display HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year).

3. Press the softkey located under any one of the tabs to change that setting.

4. To increase the time or date, do one of the following:

• Press the softkey below the selected tab.

• Press the GMS Sierra: Clock. • Press the SEEK button.

• Press the GMS Sierra: Clock. FWD button. FWD button.

• Turn the GMS Sierra: Clock. 5. To decrease the time or date, do one of the following: knob clockwise.

5. To decrease the time or date, do one of the following:

• Press the GMS Sierra: Clock. • Press the SEEK button.

• Press the GMS Sierra: Clock. REV button. REV button.

• Turn the GMS Sierra: Clock. To change the time default setting from 12 hour to 24 hour or to change the date default setting from month/ day to day/month: knob counterclockwise.

To change the time default setting from 12 hour to 24 hour or to change the date default setting from month/ day to day/month:

1. Press the MENU button and then the softkey under the GMS Sierra: Clock. 2. Press the softkey located below the forward arrow tab. 12H, 24H, the date MM/DD (month and day), and DD/MM (day and month) displays. tab.

2. Press the softkey located below the forward arrow tab. 12H, 24H, the date MM/DD (month and day), and DD/MM (day and month) displays.

3. Press the softkey located below the desired option.

4. Press the MENU button again to apply the desired option, or let the screen time out.


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